In a stadium like Hoover Metropolitan, the best way to win is through great pitching. Latest example: Arkansas' ninth shutout of the season (third-most in the SEC), a 4-0 game that sent the Razorbacks to the second round of the conference tournament and eliminated Texas A&M.
The Hogs have one of the better pitching staffs in the SEC, holding opponents to a .206 batting average and posting a 2.41 ERA, both of them second-best in the league. You can argue that in some ways the Aggies pitched just as well as the Razorbacks -- Texas A&M allowed six hits and two walks, while Arkansas allowed seven hits and two walks. But A&M left eight men on base, Arkansas only left six, and that accounted for at least part of the difference.
As far as postseason position, this game probably doesn't make much difference. The Aggies and Razorbacks were both likely in the NCAA tournament to begin with, though Arkansas can feel a bit more confident about heading to a regional somewhere. The Hogs take on Ole Miss on Wednesday, while Texas A&M waits to hear from the selection committee.